PR25DD engine

WARNING: This page is about a different variant/trim than selected.

CHECK HEATED OXYGEN SENSOR 2 HEATER

Turn ignition switch OFF.
Disconnect heated oxygen sensor 2 (HO2S2) harness connector.

Check resistance between HO2S2 terminals as per the following.

Heated oxygen sensor 2		Resistance
+	-
Terminal
1	2	5.4 - 7.3 Ohm [at 25 deg. C (77 deg. F)]
4	1	INF.Ohm (Continuity should not exist)
	2
	3
3	4
	1
	2

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 2.

REPLACE HEATED OXYGEN SENSOR 2
Replace heated oxygen sensor 2. Refer to Exploded View (AWD models) or Exploded View (FWD models).
CAUTION:
- Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
- Before installing new sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial service tool).
INSPECTION END